CVE-2025-13943
Published Feb 24, 2026
Last updated 2 months ago
CVSS high 8.8
Network
Zyxel
Zyxel EX3301-T0
AI description
Automated description summarized from trusted sources.
CVE-2025-13943 is identified as a post-authentication command injection vulnerability affecting specific firmware versions of the Zyxel EX3301-T0 device. This flaw resides within the log file download function of the device's firmware. The vulnerability, categorized under CWE-78 (Improper Neutralization of Special Elements used in an OS Command), allows an authenticated attacker to execute arbitrary operating system commands on the affected device. This is possible due to insufficient neutralization of special characters in user-supplied input within the vulnerable function. The affected firmware versions include those through 5.50(ABVY.7)C0.
- Description
- A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)C0 could allow an authenticated attacker to execute operating system (OS) commands on an affected device.
- Source
- security@zyxel.com.tw
- NVD status
- Analyzed
- Products
- ee5301-00_firmware, ee3301-00_firmware, dx5401-b1_firmware, dx4510-b1_firmware, dx4510-b0_firmware, dx3301-t0_firmware, dx3300-t1_firmware, dx3300-t0_firmware, ee6510-10_firmware, emg3525-t50b_firmware, emg5523-t50b_firmware, ex2210-t0_firmware, ex3300-t0_firmware, ex3300-t1_firmware, ex3301-t0_firmware, ex3500-t0_firmware, ex3501-t0_firmware, ex3510-b0_firmware, ex3510-b1_firmware, ex3600-t0_firmware, ex5401-b1_firmware, ex5510-b0_firmware, ex5512-t0_firmware, ex5601-t0_firmware, ex5601-t1_firmware, ex7501-b0_firmware, ex7710-b0_firmware, gm4100-b0_firmware, pm7500-00_firmware, vmg3625-t50b_firmware, vmg4005-b50a_firmware, vmg4005-b60a_firmware, ax7501-b1_firmware, pe3301-00_firmware, pe5301-01_firmware, pm3100-t0_firmware, pm5100-t0_firmware, pm5100-t1_firmware, pm7300-t0_firmware, px3321-t1_firmware, px5301-t0_firmware, vmg8623-t50b_firmware, we3300-00_firmware, wx3100-t0_firmware, wx3401-b1_firmware, wx5600-t0_firmware, wx5610-b0_firmware, dm4200-b0_firmware, we4600-00_firmware, emg6726-b10a_firmware, am7510-00_firmware, vmg4927-b50a_firmware
CVSS 3.1
- Type
- Primary
- Base score
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
- security@zyxel.com.tw
- CWE-78
- Hype score
- Not currently trending
CVE-2025-13943 (CVSS:8.8, HIGH) is Analyzed. A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware ..https://t.co/0y3NXMGyHq #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
@cracbot
1 Mar 2026
55 Impressions
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CVE-2025-13943 (CVSS:8.8, HIGH) is Analyzed. A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware ..https://t.co/0y3NXMGyHq #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
@cracbot
28 Feb 2026
51 Impressions
0 Retweets
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Organizations using Zyxel products should prioritize installing the recommended patches and consider replacing any legacy devices that are no longer supported or have reached end-of-life status (CVE-2025-13943, CVE-2026-1459, CVE-2024-40891). https://t.co/KweePUxaRH
@eclypsium
27 Feb 2026
94 Impressions
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⚠️ Vulnerabilidades en productos Zyxel ❗ CVE-2026-1459 ❗ CVE-2025-13943 ❗ CVE-2025-13942 ➡️ Más info: https://t.co/46G5AlbX0D https://t.co/Mm5XqgBCoc
@CERTpy
27 Feb 2026
79 Impressions
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Zyxel has published 2 CVEs for some vulns I found :D CVE-2025-13943: Authenticated command injection in log export CGI CVE-2025-13942: Unauthenticated command injection in UPnP daemon I will blog about this in the coming months. Meanwhile, exploits here: https://t.co/CbVHekdN5q
@hacefresko
24 Feb 2026
2068 Impressions
13 Retweets
37 Likes
9 Bookmarks
1 Reply
0 Quotes
CVE-2025-13943 A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)C0 could allow an… https://t.co/oynISNqseG
@CVEnew
24 Feb 2026
41 Impressions
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[CVE-2025-13943: HIGH] Critical cyber security alert: Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)C0 are vulnerable to command injection, enabling attackers to run OS commands.#cve,CVE-2025-13943,#cybersecurity https://t.co/UloRAYwlkg
@CveFindCom
24 Feb 2026
46 Impressions
0 Retweets
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